(1) In accordance with the principle of "advanced technology, mature and reliable, economic and reasonable", we must fully understand the performance, characteristics and supply status of the equipment, and choose and buy the equipment that has been identified and meets the production needs.

(2) The selection of equipment should be able to meet the technical requirements of product processing and have a certain flexibility. Equipment selection should pay attention to standardization, generalization and serialization.

(3) The equipment occupies a small area, so as to save the floor space of the plant and investment in infrastructure.

(4) At present, China has FA series of cotton spinning equipment, which has basically met the needs of different levels of product processing. However, individual factories, if conditions permit, can also introduce advanced spinning equipment in the world, in order to improve the competitiveness of products in the international market